Product design and scope
Design standard:API 6D or API600
Length of structure:API 6D 
Flange connecting end:ASME B16.5/ASME B16.47
Butt welding connecting end:ASME B16.25
Wall thickness:ASME B16.34
Inspection and test:API 6D or API598
Pressure and temperature rating:ASME B16.34
Product scope:NPS 2″~NPS 60″,CL150~CL1500 
Main body material:WCB､LCB､WCC､WC6､WC9､CF8､CF8M､CF3､CF3M､A890 4A etc.
Drive device:handle, bevel gear, electric, pneumatic, etc.